Discovered almost 5 years ago
Source: static code analysis
Category: Redirect
Confidence level: High

Problem

Possible unprotected redirect

Location

app/controllers/session_controller.rb:135

redirect_to((DiscourseSingleSignOn.parse(request.query_string).return_path or path("/")))

Category description: Sometimes redirect_to can be used with a user-supplied value that may allow the attacker to change the :host option and load a malicious script from a third party website.

Solution: fix the issue in app/controllers/session_controller.rb or mark it as false positive.